GPT-5.3 Instant reduces hallucinations by 26.8% on web queries and 19.7% on internal knowledge — OpenAI's most-used model now ...

OpenAI is rolling out GPT-5.3 Instant today. OpenAI wants to make ChatGPT feel smoother in the places people actually notice. The company says this ...

OpenAI releases GPT-5.3 Instant for ChatGPT with fewer refusals, improved web answers, and reduced hallucinations across major benchmarks.

OpenAI unveiled new API updates at its Dev Day on Monday, introducing GPT-5 Pro, its latest language model, its new video generation model Sora 2, and a smaller, cheaper voice model. The addition of ...

OpenAI has confirmed that it's retiring ChatGPT's most popular model, called GPT-4o, and several other models, including GPT-5 Instant, GPT-5 Thinking, GPT-4.1, GPT-4.1 mini, and o4-mini. In a support ...

OpenAI has sent out emails notifying API customers that its chatgpt-4o-latest model will be retired from the developer platform in mid-February 2026,. Access to the model is scheduled to end on ...

OpenAI is bidding adieu to 4o, a favorite model among many users. Chats with 4o will still be accessible after that date. The company says only 1% of its users still engage with 4o. It's a sad day for ...

GPT-5.3-Codex helped debug and deploy parts of itself. Codex can be steered mid-task without losing context. "Underspecified" prompts now produce richer, more usable results. OpenAI today announced ...